“…Ultrafiltration as a clarification process in fruit juice processing is of interest to the food industry for over 20 years (Alvarez, Andres, Riera, & Alvarez, 1996;Girard & Fukumoto, 1999;Mondor, Girard, & Moresoli, 2000;Padilla & McLellan, 1989;Riedl, Girard, & Lencki, 1998;Sheu, Wiley, & Schlimme, 1987;Wu, Zall, & Tzeng, 1990). The advantages of ultrafiltration for clarification of apple juice are based on avoidance of filtering aids which are costly and give disposal problems, and shorter process time than traditional filtration processes (Ben Amar, Gupta, & Jaffrin, 1990;Rao, Acree, Cooley, & Enis, 1987;Schneider & Czech, 1994).…”